ok. Possibly dumb question. I removed the rear cover held on with 3 bolts and found the captured ball and sleeve was pretty much frozen in that bore. Cleaned it up and shift effort is less. Question is, the 2 compartments- are they both suppose to be filled with lower unit lube? Mine have lube in both sections and wondering why it’s not self lubing? I tilted unit up and clamped off reservoir line before removal and very little lube was lost.